Projects

CodebaseRAG

Hexagonal RAG over your own codebase, with a deterministic, eval-first core: ingest, query, and CI-gated retrieval evals.

The result is an eval gate that blocks retrieval regressions before merge: quality is a CI-checked claim with a committed floor, not a demo vibe.

Python 3.13 · FastAPI · pgvector · Qdrant · Ollama · Langfuse · mypy strict

Kafka Adapter Telemetry

Event-driven adapter telemetry: a Kafka gateway + hub pipeline with idempotent Oracle persistence, per-adapter health tracking, alerting, and a live SSE mission-control dashboard.

The result is operational visibility across ~90 adapters in 4 countries: who is DOWN, since when, and exactly one alert per episode — no pager storms, no silent gaps.

Java 25 · Spring Boot 4.1 · Kafka · Oracle · Flyway · Testcontainers · SSE

Harness

A standardized multi-agent harness for Claude Code and OpenCode: Spec-Driven Development roles (Leader, Spec Author, Implementer, Reviewer) installed into any project with a single command. Its process also ships as six standalone skills (npx skills add jordimarsal/harness).

The payoff is repeatable agent work: specs, roles and gates installed in one command, on any stack — this portfolio is built through them.

Agents · SDD · CLI · Conventions

Interview Simulator

Voice interview simulator: a local LLM plays the interviewer and Whisper handles transcription, so you can rehearse technical interviews fully offline.

Whisper · Local LLM

Redis Toolkit

Rate-limiting toolkit for LLM gateways: atomic token-bucket quotas, pluggable stores, honest failure modes — with a Javalin gateway demo exposing an OpenAI-style endpoint.

Java · Javalin · Redis · Testcontainers

MD Mermaid PDF

CLI that renders Markdown with Mermaid diagrams straight to PDF, engineered with TDD, mypy strict and CI.

Python · Markdown · Mermaid · GitHub Actions

MCP Transparent PNG

MCP (Model Context Protocol) server that makes PNG colors transparent (alpha channel) with rgb/auto/greenscreen modes.

Python 3.13 · MCP · Pillow · GitHub Actions

ggufbench

An agentic benchmark for local GGUF models: prompt speed, tool-calling, code generation and multi-step agent work graded under one identical harness, with the raw receipts of every call — 100% local, no cloud, no APIs.

Python · GGUF · llama.cpp · GitHub Actions

Bible Text Analysis

NLP study on the Bible: web scraping, NLTK processing, LDA topic modeling and sentiment analysis — my Data Science roots.

Python · NLTK · LDA · Jupyter

Product Offers API

Technical assessment: a product offers REST API — price inquiries by date, product and brand, served with Spring Boot.

Java 17 · Spring Boot 3.2 · H2 · JUnit 5 · Mockito

Rustcut

Tiny URL shortener in Rust: a deliberately minimalist REST API on Actix-web with SQLite storage.

Rust · Actix-web · SQLite

Spring Boot Casino

Technical assessment: a casino betting domain modeled in Spring Boot following a hexagonal architecture.

Java · Spring Boot · Hexagonal Architecture